Hand-pinchers



UNITED STATES PATENT OFFICE.

MARTIN Vi B. ETHRIDGE, OF LYNN, ASSIGNOR OF ONE-HALF T0 C(W. HODGDON, OF BOSTON, MASSAGHUSETTS.

HAND-PINGHERS.

SPECIFIGA'II'ON formingjart cf Letters Patent N0. 259,674, dated June 1882.

Application filed December 19. 1881. (N0 model.)

T0 all whom it may concern Reit known that I, MARTIN V. B, ETHRIDGE, 0f Lynn, inethe county of Essex and State 0f Massachusetts, have inventiad certain new and useful Improvements in Hand-Pintzhers, of whieh the following is a specificationL My inventzion relates to that; dass of pinchers more particularly employed in the manufacture of boots and shoes, and used in stretching er drawing in the upper leather composing the same in the process of laslzing.

My invention consists praetically in the application of double duplicated grasping-jaws having a duplex action and simultaneously operated by a single movement 0f the upper and lower handl'es, in conjunction with eertain projecting arms, cam-lever, springs, and parts hereinafter more fully described, anti shown in the aceompanying drawings, forming apart 0f this specificat'ion, referri ng to which- Figure 1 is a. freut end elevation,exhibiting m y improved inven tion. Fig. 2 indicates a side elevation 0f the san1e. X and Z are sheets showing myinvention respectively in perspeotive and in detail.

Similarletters otreferenee indicatelike parts in the various figures, in which a a are the curved handles, havingtheir Outer surfaces indented in the otdinary manner. 'lhe upper handle, a, is formed with a forwardprojecting arm, b, of suitable length f0r leverage, and provided upon its upper side with a cam-surface, as shown at; c, Fig. 2, t0 facilitate the upward movement and adjustment 0f the two projeeting lever-arms d d, which are integral with and operate to elose the twoouter grasping-jaws, e e, the firm hold of said jaws being augmented by serrated inne! surfaces, k k, and controlled by the handle a.

The immer jaws, e e, are also serrated 01 grooved upon their contact-surfaces, as als k, for the obvious purpose of seeuring afirm hold upon the leather, fabric, er material used. Said jaws e e are constructed. with a boss 01' increased thicknessrof metal, as at l l, Fig. 1,130 form bearings against; the sides m m of the elongated partz' 0f the arm a. Thebearings l l are drilled a sufficient depth for the reeeption of the ends 0f the roeker-shafl: n, (see sheet Z) to which thejaws e e are fixedly attached by thepinso O. 'lbe shaftm rotates freely through the arm z, and permits the jaws e e 120 move in a eireular direetion. Said jaws e e are further attachecl by pins 0r bolts 19 p, which operate as hinges to the.outerjawse e.-

s s, Fig. 1, are closed coil-springs, which operate to keep the serrated surfaces of the outer jaws, e e, apart f rom the inner jaws for the ready insertion of thematerial ib 1's desired 130 secure..

In the operation 0f my improved invention when lasting boots er shoes b0th edges of the upper-leather, compri sing Vamp and quarter, are grasped simultaneously by the jatws e e, and the leather 01 cloth is drawn over the last.

by a steady and equalizing strain upon b0th Having thus described the nature and operation 0f my invention, what Idesire to secure by Letters Patent isl. The construction of hand. pinehers er ed with a rotatingshaftn, in'combination with the elongated n0se 0r bearin g l, formin g a parb of the handle a, essentially as speci-fied.

In testimony whereof Ihave signed m y name this speeification in the pressence Of two sub scribing witnesses.

MARTIN V. B. ETHRIDGE.

Wit;nesses:

WM. H. MILLER, H. E. REMIOK. 

